.line{
    background-color: #ddd;
    width: 300px;
    border-radius: 5px;
    text-align: center;
}

.line.event{
    background-color: #aaa;
}

.btn-primary{
    width: 80px;
    height: 30px;
    line-height: 30px;
    margin-left: 10px;
    margin-right: 10px;
    border: none;
    border-radius: 5px;
}